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Evaluation Board User Guide

UG-329

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluation Board for the ADP2164 Step-Down Regulator

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. 0 | Page 1 of 8

GENERAL DESCRIPTION

The ADP2164 is a synchronous, step-down dc-to-dc regulator in

a compact, 4 mm × 4 mm LFCSP package. The ADP2164 requires

minimal external components to provide a high efficiency solution

with integrated power switch, synchronous rectifier, and internal

compensation. The input voltage range of the ADP2164 is 2.7 V

to 6.5 V.

The ADP2164 evaluation board provides an easy way to evalu-

ate the device. This user guide describes how to quickly set up

the board to collect performance data.

Complete information about the ADP2164 is available in the

ADP2164 data sheet, which should be consulted in conjunction

with this user guide when using the evaluation board.

DIGITAL PICTURE OF THE EVALUATION BOARD

10236-001

Figure 1.

Summary of content (8 pages)

PAGE 1
Evaluation Board User Guide UG-329 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluation Board for the ADP2164 Step-Down Regulator GENERAL DESCRIPTION The ADP2164 evaluation board provides an easy way to evaluate the device. This user guide describes how to quickly set up the board to collect performance data. The ADP2164 is a synchronous, step-down dc-to-dc regulator in a compact, 4 mm × 4 mm LFCSP package.
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UG-329 Evaluation Board User Guide TABLE OF CONTENTS General Description ......................................................................... 1 Typical Performance Characteristics ..............................................5 Digital Picture of the Evaluation Board ......................................... 1 Evaluation Board Schematics...........................................................6 Revision History ...............................................................................
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Evaluation Board User Guide UG-329 SETTING UP THE EVALUATION BOARD POWERING UP THE EVALUATION BOARD Output Load Connection The ADP2164 evaluation board is fully assembled and tested. Before applying power to the evaluation board, follow the setup procedures in this section. Before connecting the load to the ADP2164 evaluation board, make sure that the board is turned off.
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UG-329 Evaluation Board User Guide MEASURING EVALUATION BOARD PERFORMANCE Measuring the Switching Waveform To observe the switching waveform with an oscilloscope, place the oscilloscope probe tip at Test Point T4 with the probe ground connected to GND. Set the oscilloscope to a dc coupling, 2 V/division, 1 µs/division time base. The switching waveform should alternate between 0 V and the approximate input voltage. Measuring Load Regulation A standard oscilloscope probe has a long wire ground clip.
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Evaluation Board User Guide UG-329 TYPICAL PERFORMANCE CHARACTERISTICS 90 90 80 80 EFFICIENCY (%) 100 70 60 40 INDUCTOR: COILCRAFT MSS1038-152NLB 50 INDUCTOR: COILCRAFT MSS1038-152NLB 3 30 10236-003 2 OUTPUT CURRENT (A) VOUT = 0.6V VOUT = 1.0V VOUT = 1.2V VOUT = 1.8V VOUT = 2.5V 40 30 1 60 VOUT = 0.6V VOUT = 1.0V VOUT = 1.2V VOUT = 1.8V VOUT = 2.5V VOUT = 3.3V 50 0 70 4 0 Figure 3. Efficiency vs.
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UG-329 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS J1 PGOOD 1 1 T1 PV IN 1 2 J3 VIN 1 2 J6 GN D 1 T2 GN D 1 T3 VO U T 1 2 J9 VO U T 1 2 J12 GN D 1 T5 GN D R1 10 3 2 1 J2 EN C2 J5 EN 3 2 1 J4 SY N C 47u F/ 16V C1 0.1u R2 10k 1 PG ND 13 PG ND 8 7 5 R5 optional 9 1 VIN PV IN 14 15 EN SW GN D 1 J11 TR K J13 SW 1 10 T4 SW C6 optional 2 C3 C4 C7 C8 optional TR K FB 11 optional 4 SW AD P2164 L1 1uH 100u F/ 6.3V 3 PV IN 12 100u F/ 6.
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Evaluation Board User Guide UG-329 10236-010 10236-011 EVALUATION BOARD LAYOUT 10236-012 10236-013 Figure 12. Second Layer Figure 10. Top Layer Figure 11. Third Layer Figure 13. Bottom Layer Rev.
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UG-329 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 2. Qty 1 1 2 2 2 1 1 3 1 1 1 10 4 4 Reference Designator C1 C2 C3, C4 C5, C6 C7, C8 L1 R1 R2, R3, R4 R5 R6 U1 J1, J5, J8, J11, J13, T1, T2, T3, T4, T5 J3, J6, J9, J12 J2, J4, J7, J10 Description Capacitor, 0.1 µF Capacitor, 47 µF, 16 V Capacitor, 100 µF, 6.